Rewinding-machine.



G. B. BIRCH 61 J. A. CAMERON.

REWINDING MACHINE.

APPLICATION FILED JULYIQ. I915.

1,258,644. Patented Mar. 12, 1918.

2 SHEETS-SHEET I.

G. B. BIRCH 61 J. A. CAMERON.

REWINDING MACHINE.

APPLICATION FILED JULY 19. 1915.

Patented Mar. 12, 1918.

2 SHEETS-SHEET 2.

UNITED STATES PATENT OFFICE.

GUSTALF BIRGER BIRCH AND JAMES A. CAMERON, OF BROOKLYN, NEW YORK, ASSIGN- OBS TO CAMEBION MACHINE COMPANY, OF BROOKLYN, NEW YORK, A CORPORATION OF NEW YORK.

BEWINDING-MACHINE.

Application filed July 19, 1915.

To all whom it may concern:

Be it known that we, GUSTAF B. BIRCH and JAMES A. CAMERON, both citizens of the United States, and residents of the borough of Brooklyn, New York city, in the county of Kings and State of New York, have mvented certain new and useful Improvements in Rewinding-Machines, of which the following is a specification.

The present invention relates to rewinding mechanism particularly of the type used in connection with slitting machines. In Patent No. 1,07 6,189 there is disclosed a device in which the newinding is effected by means of two driven rewindin rolls that afford a support for the coils to rewound and that move ata constant speed together with a pressure exerting roller or riding roller engaging with the upper surface of the rewound coils and exerting pressure thereupon, and by means of rack bars and pinions maintaining the pressure exertiriig roller or riding roller parallel to the rewm ing rolls, so that all the rewound coils will be of uniform diameter. This produces ti htl rewound coils of uniform diameter w ere y the pull on the web at all oints laterally is equal, so that the web wi not be distorted out of the plane of severance.

There are, however, certain materials whose surface will not resist pressure. For instance, when slitting and rewinding wax coated materials and carbon coated paper the pressure of the riding roller, together with the weight or load of the material itself, may become so great that the surface will be adversely affected. So also, when winding tacky material having a friction surface the tension upon the material by reason of such friction becomes very great and it may be desirable in such a case to relieve the rewound coils of the compression caused by their own wei ht. Furthermore, it is sometimes desire by the trade to rewind the material in relatively loose or soft coil form instead of into hard or tightly wound coils.

Again, in producing certain slitted material the requirements are not so severe. This is true, for instance, in connection with the paper known as counter-roll paper, that is to say, paper used in roll form on the counters of a store for wrapping purposes.

rewinding is not so essential and the work Specification of Letters latent.

Patented Mar. 12, 1918.

Serial No. 40,707.

may therefore be done by a less expensive machine than that disclosed in Patent No. 1,076,189.

The main object of this invention is to produce a machine whereby the amount of pressure to which the material is subjected can be varied, especially with regard to relieving the rewound material of the compression caused by its own weight.

Another object of the invention is to produce a machine in which a riding roller may be dispensed with so as to facilitate removal of the rewound material but without sacrificing any of the advantages of the riding roller in producing tightly wound coils.

One feature of the invention resides in providing means having a constant speed which engage with the surface of the coils to be rewound together with means having a variable speed that is dependent upon the diameter of the rewound coils and which engage with the center of the coils to be rewound. This second means is in the form of a rewinding shaft to which suflicient weight can be attached to hold the coils against the first means under pressure exerted from within the coils outwardly. Means may also be provided for maintaining the said rewinding shaft arallel to the surface rewinding means so t at all the re wound coils will be of the same diameter. In this manner the advantages of the construction shown in Patent No. 1,076,189 are retained, the extra riding roller, which in the old construction had to be raised before the rewound material could be removed, is dispensed with.

1 referably the surface rewinding means will be in the form of two driven rewinding rolls having a constant speed and affording support for the rewound coils, the rewinding shaft being in a plane between the two rolls.

Another feature of the invention is that this rewinding shaft may be counter-weighted to a greater or lesser extent in such a way as to compensate for its own weight and the weight of the members connected to it, as well as to compensate for the weight of the rewound coils. In this manner the wei hts may be so adjusted that the load, including the rewound material carried by the rewinding shaft, may be completely counteracted, so that the rewound material will barely touch the rewinding rolls, or, in extreme cases, may even be completely out of enagement with said rewinding rolls so that y no' possibility can the surface of the material be destroyed by the rewinding actioni Other features of construction, combination of parts and arran ment of-elements will appear as the specih cztion proceeds.

In the accompanylng drawings the invention is disclosed in a concrete and preferred form in which, however, changes may be made without departing from the legitimate and the intended scope of the invention as expressed in the claims! In the said drawings: Figure 1 is a vertical sectional view on the line 1-1' of Fig. 2.

Fig. 2 is a vertical sectional view at right angles to the view shown in Fig. 1, 11 th parts broken away, substantially on the line 22 of Fig. 1.

Fig. 3 is a detail view, artly diagrams matic in form, of the slip rive connection and adjacent parts, looking in the direction of the arrow 3 of Flg. 2.

Similar characters of reference indicate corresponding parts in the different views.

In the embodiment disclosed herein the surface rewinding means consist of the rollers 1 and 2, whichrotate in the same direction at a constant speed, the roller 1 in the present instance also forming a cutter roll against which the score cutters 3 act to sever or slit the material as it passes between the said roller 1 and the cutters 3. So far as this part of the machine is concerned, it 1s the same as similar parts disclosed in Patent No. 1,076,189. j

The center rewinding devicein the present embodiment comprises the rewinding shaft 4, driven at a speed proportionate to the diameter of the rewound material, as will hereafter appear. This rewinding shaft is carried in a framing 5 having the two racks 6, one at each side of the machine, en-

.gaging with the pinions 7 on the shaft 8. The weight of the parts composing the rewinding shaft 4, etc., will normally tend to press the rewound material 9 into engagement with the rewindin rolls. In order, however, to counteract t e weight of these parts, as well as the weight of the rewound material, or any portion of the weight of these parts and material, there are provided the counterweights 10 which may be increased or decreased at will, said counterweights being attached to the flexible connection 11 passing over the pulley 12 and attached to the lower end of the rack 6. It will be understood that the parts are in duplicate so that the parallelism of the rewinding shaft 9 with respect to the rolls 1 and 2 will be maintained.

The paper is led from the roll 13 over 7 suitable guides, such as 14, 15, 16 and 17,

whence-it passes between the roller 1 and at will. This may be effected by. a handwheel, as20, attached to the end of the shaft 8, or, it may be effected by means of the chain 21 passing over a sprocket 22 on the shaft 8 and over another sprocket 23 on the shaft 24. This shaft 24 may also be provided with a hand-wheel 25 and, in addition, it may carry the ratchet 26 with which engages the pawl 27 so as to prevent backward rotation of the parts when the rewindingshaft 4 has been elevated.

In general, motion is derived from the pinion 28, on the power shaft, which meshes with the gear 29 on the end of the roller 1, said roller l-having a pinion 30 engaging with an intermediate gear 31, which in turn imparts motion to the pinion 32 on the roller 2.

The roller 1 further carries a spiral gear 33 which meshes with another spiral car 34 on the upright shaft 35. This upright shaft is provided with a slip friction drive 36, one member 37 of which is connected to the shaft 35, and the other member 38 of which is fast with the bevel gear 39, the

latter being loose on the shaft 35. The bevel gear 39 meshes with the bevel pinion 40 which drives the rewinding shaft 4. Suitable means, such as the brackets 41, are provided for keeping the spiral gear 34 from moving up or down. The shaft 35 is carried by the extension 42 secured to one of the racks 6 so that, as the latter rise with the rewinding shaft, the shaft 35 will be moved upwardly and will thus transmit motion to the rewinding shaft in any position. The racks 6 slide in suitable guides 43 stationary with the framing of the machine.

It will be observed that as the diameter of the coils increases, less speed of the rewinding shaft 4 is required to properly rewind the material. Accordin ly, the pull on the web by the rewound coi s will cause a slip page between 37 and 38 and therefore the rewinding shaft 4 will be driven 1'81; a-2speed proportionate to the diameter of the rewound material.

What is claimed, is:

1. A rewinding machine comprising two driven rewinding rolls, having a constant speed, affording a support for the rewound coils and engag'fg with the surface of the latter, and a' 'ven rewinding shaft in a plane between the two rolls, having a variable speed depending upon the diameter of the rewound coils, engaging with the center of the coils to be rewound and capacitatied to be displaced with respect to the rolls asthe diameter of the rewound coils increases.

2 A rewinding machine comprising two driven rcwinding rolls, having a constant speed, all'ording a support for the rewound coils and engaging with the surface of the latter. a driven rewinding shaft in a plane between the two rolls, having a variable speed depending upon the diameter of the rewound coils, engaging with the center of the coils to be rewound, and means for displacing the rewinding shaft with respect to the rolls as the diameter of the rewound coils increases and for maintaining the rewinding shaft in parallelism with the rolls.

3. A rewinding machine comprising two driven rewinding rolls, having a constant speed, affording a support for the rewound coils and engaging with the surface of the latter, and a driven pressure exerting rewinding shaft in a plane between the two rolls, having a variable speed depending upon the diameter of the rewound coils, engaging with the center of the coils to be rewound, to hold the coils against the rolls under pressure exerted from within the coils outwardly and capacitated to be displaced with respect to the rolls as the diameter of the rewound coils increases.

"if. A rewinding machine comprising two driven rewinding rolls, having a constant speed, affording a support for the rewound coils and engaging with the surface of the latter, and a driven pressure exerting rewinding shaft in a plane between the two rolls having a variable speed depending upon the diameter of the rewound coils, engaging with the center of the coils to be rewound to hold the coils against the rolls und pressure exerted from within. the coils outwardly, and means for displacing the rewinding shaft with respect to the rolls as the diameter of the rewound coils increases tor n'iaintaining the rewinding shalt in parallelism with. the rolls.

3. A rewinding machine comprising two driven rewinding rolls, having a constant speed, affording a support for the rewound coils and adapted to engage with the urface of the latter, a rewindln shaft, in a plane between the two rolls an driven at a speed depending upon the diameter of the rewound coils for supporting the latter, means for displacing the rewinding shaft with respect to the rolls as the diameter of the rewound eoils increases and means for causing the rewinding shaft to sustain substantially the entire load of the rewound coils so as to rewind said coils without appreciable surface pressure.

6. A rewinding machine comprising two driven rewinding rolls, having a constant speed, a tlording a support for the rewound coils and adapted to engage with the surface of the latter, a vertically movable rewinding shat't in a plane between the two rolls and driven at a speed depending upon the diameter of the rewound coils for supporting the latter, means for displacing the rewinding shaft with respect to the rolls as the diameter of the rewound coils increases, and means for variably counter-weighting said rewinding shaft and the load carried thereby to )rcss the rewound coils against the rolls with a variable pressure.

7. A rewinding machine comprising two driven rewinding rolls, having a constant speed, affording a support for the rewound coils and adapted to engage with the surface of the latter, a rewinding shalt, in a plane between the two rolls and driven at a speed depending upon the diameter of the rewound coils, for supporting the latter, means for displacing the rewinding shaft with respect to the rolls as the diameter of the rewound coils increases, means for causing the rewinding shaft to sustain substantially the entire load of the rewound coils so as to re wind said coils without appreciable surface pressure, and means for maintaining the rewinding shaft in parallelism with the rewinding rolls.

8. A rewinding machine comprising two driven rewinding rolls, having a constant speed, all'ording a support for the rewound coils and engaging with the surface of the latter, a driven rewinding shaft resting upon the rolls in a plane between the two rolls, having a variable speed depending upon the diameter of the rewound coils, engaging with the center of the coils to be rewound, racks carried at opposite ends of the rewinding shaft and a shaft having pinions at opposite ends engaging with said racks to maintain the rewinding shaft in parallelism with the rewinding rolls.

Signed at New York city borough of Brooklyn in the county of Kings and State of New York, this 17th day of July A. D.

GUSTAF BIRGER BIRCH. JAMES A. CAMERON.

-Witnesses EDWIN S. KNUnsoN, JOHN ii. 0. MAYER. 

